Using multiple rules simultaneously in DRL

[lakshjee]

Hi All,

I have a small problem in splitting two rules. it is as follows.  when user selects table and laptop the process is not working. please assist me.

rule "set as admin_task" ruleflow-group "requestrule"

no-loop

when

  $p : Capex( table == true ) || $p :Capex( chair == true )

then

  modify($p) {

  setAdmin_item(true);

  }

end

rule "set as it_task" ruleflow-group "requestrule"

no-loop

when

  $p : Capex( computer_pc == true) || $p :Capex( laptop == true)

then

  modify($p) {

  setIt_item(true);

  }

end

[micste]

Sevearal possibilities, dependent on what you like to achieve

- don't use an xor Gateway but a parallel Gateway to have both human Tasks triggered

- don't allow the choice to select table and laptop

- define a salience for the two rules and don't execute the second rule if the first was fired

- have a third rule that trades the choice "table and laptop"

[lakshjee]

Thank u for your response.  But if select "table and laptop" it belong to two separate task which are "Admin and IT". then how can i split it?

and How we don't allow the choice to select table and laptop thru JBPM?

if u can provide an example that is great.

Thank u.

[micste]

See here für documentation of diverging (AND or parallel) gateways

Chapter 6. Processes

You are currently using an Xor Gateway which Triggers only one of the Manual Tasks, you may use a parallel Gateway.

I don't know your application and how the data is generated. If you have an Input form, you need to implement in the form to not allow to select both values (table and laptop), if that would be the correct way.

Maybe you should describe your application in more Detail to get a clou on what you like to do.

[lakshjee]

my requirement is as follows, there are several items to select and request.

IT Item = computer, laptop, mobile

Admin item = table, chair etc.

it comes thru a human task and the user can select any value computer, laptop,table, chair etc from the above items. based on the above items two separate user task comes.

eg: Admin Task and IT Task.

and also user select simultaneously admin and IT item my rule doesn't work. if he select only the items belong to admin or IT then only the rule be excecute. i need to execute both user task parallel when user select both admin and IT items simultaneously.

I defined a salience as follows.

rule "set as admin_task" ruleflow-group "requestrule"

no-loop

when

  $p : Capex( table == true ) || $p :Capex( chair == true )

then

  modify($p) {

  setAdmin_item(true);

  }

end

rule "set as it_task" ruleflow-group "requestrule"

no-loop

salience -50

when

  $p : Capex( computer_pc == true) || $p :Capex( laptop == true)

then

  modify($p) {

  setIt_item(true);

  }

end

and also if the user select only laptop and computer which come under IT item, it only should goes to the IT Task human user node. shouldn't go parallel with admin task

[micste]

Sounds for me as if you don't Need an xor Gateway and no parallel Gateway but an Or (or inclusive) Gateway, see link to documentation in answer above, here an excerpt

"OR or inclusive means that all outgoing connections whose condition evaluates to true are selected. Conditions are similar to the exclusive gateway, except that no priorities are taken into account. Note that you should make sure that at least one of the outgoing connections will evaluate to true at runtime because the engine will throw an exception at runtime if it cannot determine an outgoing connection."

So the flow should trigger each human Task which condition ist true. Try to change the Gateway type in your jbpm process to "inclusive" from "xor".

[lakshjee]

could u kindly send me the link to the documentation. i changed it to inclusive and it didnt work when i select both computer and table which belong to both IT and Admin task.

Thank u.

[micste]

http://docs.jboss.org/jbpm/v6.0/userguide/jBPMBPMN2.html#d0e3275

http://knowhow.visual-paradigm.com/business-process-modeling/bpmn-gateways/

http://en.bpmn-community.org/tutorials/4/

https://github.com/droolsjbpm/jbpm/tree/master/jbpm-examples/src/main/resources/junit

[lakshjee]

thank u very much. in my case i should use inclusive gateway so the condition for the connection of the split should same?

return KieFunctions.isTrue(Capex.getAdmin_item())==true;

[micste]

What's the variable Name of your Capex object in process?
Let's say the variable name is "cap".

return (cap.getAdmin_item() == true);

should work. I have no experiences using KieFunctions.isTrue, but looks correct if the variable name is correct.

[lakshjee]

i tried it. but it doesn't work and got the following error.

12:11:22,958 WARN  [com.arjuna.ats.arjuna] (http--127.0.0.1-8080-5) ARJUNA012127: TwoPhaseCoordinator.afterCompletion - returned failure for SynchronizationImple< 0:ffffc0a8ff29:4fc052ef:53a12cd1:cfb, org.drools.persistence.jta.JtaTransactionSynchronizationAdapter@7c09ca >

12:11:56,023 INFO  [org.drools.compiler.kie.builder.impl.KieRepositoryImpl] (http--127.0.0.1-8080-6) KieModule was added:MemoryKieModule[ ReleaseId=org.jbpm:inclusive:1.0]

12:12:32,351 WARN  [org.jbpm.services.task.persistence.TaskTransactionInterceptor] (http--127.0.0.1-8080-2) Could not commit session: java.lang.IllegalArgumentException: Named query not found: getAllTasksEvents

    at org.hibernate.ejb.AbstractEntityManagerImpl.createNamedQuery(AbstractEntityManagerImpl.java:636) [hibernate-entitymanager-4.0.1.Final.jar:4.0.1.Final]

    at org.jbpm.services.task.persistence.JPATaskPersistenceContext.queryWithParametersInTransaction(JPATaskPersistenceContext.java:371) [jbpm-human-task-core-6.0.1.Final.jar:6.0.1.Final]

    at org.jbpm.services.task.audit.GetAuditEventsCommand.execute(GetAuditEventsCommand.java:33) [jbpm-human-task-audit-6.0.1.Final.jar:6.0.1.Final]

    at org.jbpm.services.task.audit.GetAuditEventsCommand.execute(GetAuditEventsCommand.java:16) [jbpm-human-task-audit-6.0.1.Final.jar:6.0.1.Final]

    at org.jbpm.services.task.commands.TaskCommandExecutorImpl$SelfExecutionCommandService.execute(TaskCommandExecutorImpl.java:65) [jbpm-human-task-core-6.0.1.Final.jar:6.0.1.Final]

    at org.drools.core.command.impl.AbstractInterceptor.executeNext(AbstractInterceptor.java:41) [drools-core-6.0.1.Final.jar:6.0.1.Final]

    at org.jbpm.services.task.persistence.TaskTransactionInterceptor.execute(TaskTransactionInterceptor.java:53) [jbpm-human-task-core-6.0.1.Final.jar:6.0.1.Final]

    at org.jbpm.services.task.commands.TaskCommandExecutorImpl.execute(TaskCommandExecutorImpl.java:40) [jbpm-human-task-core-6.0.1.Final.jar:6.0.1.Final]

    at org.jbpm.services.task.impl.command.CommandBasedTaskService.execute(CommandBasedTaskService.java:128) [jbpm-human-task-core-6.0.1.Final.jar:6.0.1.Final]

    at org.jbpm.console.ng.ht.backend.server.TaskServiceEntryPointImpl.getAllTaskEvents(TaskServiceEntryPointImpl.java:528) [jbpm-console-ng-human-tasks-backend-6.0.1.Final.jar:6.0.1.Final]

    at org.jbpm.console.ng.ht.backend.server.TaskServiceEntryPointImpl$Proxy$_$$_WeldClientProxy.getAllTaskEvents(TaskServiceEntryPointImpl$Proxy$_$$_WeldClientProxy.java) [jbpm-console-ng-human-tasks-backend-6.0.1.Final.jar:6.0.1.Final]

    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) [rt.jar:1.7.0_11]

    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57) [rt.jar:1.7.0_11]

    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) [rt.jar:1.7.0_11]

    at java.lang.reflect.Method.invoke(Method.java:601) [rt.jar:1.7.0_11]

    at org.jboss.errai.bus.server.io.AbstractRPCMethodCallback.invokeMethodFromMessage(AbstractRPCMethodCallback.java:48) [errai-bus-2.4.3.Final.jar:2.4.3.Final]

    at org.jboss.errai.bus.server.io.ValueReplyRPCEndpointCallback.callback(ValueReplyRPCEndpointCallback.java:22) [errai-bus-2.4.3.Final.jar:2.4.3.Final]

    at org.jboss.errai.bus.server.io.RemoteServiceCallback.callback(RemoteServiceCallback.java:54) [errai-bus-2.4.3.Final.jar:2.4.3.Final]

    at org.jboss.errai.cdi.server.CDIExtensionPoints$3.callback(CDIExtensionPoints.java:499) [errai-weld-integration-2.4.3.Final.jar:2.4.3.Final]

    at org.jboss.errai.bus.server.DeliveryPlan.deliver(DeliveryPlan.java:47) [errai-bus-2.4.3.Final.jar:2.4.3.Final]

    at org.jboss.errai.bus.server.ServerMessageBusImpl.sendGlobal(ServerMessageBusImpl.java:284) [errai-bus-2.4.3.Final.jar:2.4.3.Final]

    at org.jboss.errai.bus.server.SimpleDispatcher.dispatchGlobal(SimpleDispatcher.java:46) [errai-bus-2.4.3.Final.jar:2.4.3.Final]

    at org.jboss.errai.bus.server.service.ErraiServiceImpl.store(ErraiServiceImpl.java:92) [errai-bus-2.4.3.Final.jar:2.4.3.Final]

    at org.jboss.errai.bus.server.service.ErraiServiceImpl.store(ErraiServiceImpl.java:109) [errai-bus-2.4.3.Final.jar:2.4.3.Final]

    at org.jboss.errai.bus.server.servlet.DefaultBlockingServlet.doPost(DefaultBlockingServlet.java:140) [errai-bus-2.4.3.Final.jar:2.4.3.Final]

    at javax.servlet.http.HttpServlet.service(HttpServlet.java:754) [jboss-servlet-api_3.0_spec-1.0.0.Final.jar:1.0.0.Final]

    at javax.servlet.http.HttpServlet.service(HttpServlet.java:847) [jboss-servlet-api_3.0_spec-1.0.0.Final.jar:1.0.0.Final]

    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:329) [jbossweb-7.0.13.Final.jar:]

    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:248) [jbossweb-7.0.13.Final.jar:]

    at org.jboss.weld.servlet.ConversationPropagationFilter.doFilter(ConversationPropagationFilter.java:62) [weld-core-1.1.5.AS71.Final.jar:2012-02-10 15:31]

    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:280) [jbossweb-7.0.13.Final.jar:]

    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:248) [jbossweb-7.0.13.Final.jar:]

    at org.jboss.solder.servlet.exception.CatchExceptionFilter.doFilter(CatchExceptionFilter.java:65) [solder-impl-3.2.1.Final.jar:3.2.1.Final]

    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:280) [jbossweb-7.0.13.Final.jar:]

    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:248) [jbossweb-7.0.13.Final.jar:]

    at org.jboss.solder.servlet.event.ServletEventBridgeFilter.doFilter(ServletEventBridgeFilter.java:74) [solder-impl-3.2.1.Final.jar:3.2.1.Final]

    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:280) [jbossweb-7.0.13.Final.jar:]

    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:248) [jbossweb-7.0.13.Final.jar:]

    at org.jbpm.designer.web.filter.impl.PluggableFilter.doFilter(PluggableFilter.java:70) [jbpm-designer-backend-6.0.1.Final.jar:6.0.1.Final]

    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:280) [jbossweb-7.0.13.Final.jar:]

    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:248) [jbossweb-7.0.13.Final.jar:]

    at org.uberfire.security.server.UberFireSecurityFilter.doFilter(UberFireSecurityFilter.java:266) [uberfire-security-server-0.3.1.Final.jar:0.3.1.Final]

    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:280) [jbossweb-7.0.13.Final.jar:]

    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:248) [jbossweb-7.0.13.Final.jar:]

    at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:275) [jbossweb-7.0.13.Final.jar:]

    at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:161) [jbossweb-7.0.13.Final.jar:]

    at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:489) [jbossweb-7.0.13.Final.jar:]

    at org.jboss.as.jpa.interceptor.WebNonTxEmCloserValve.invoke(WebNonTxEmCloserValve.java:50) [jboss-as-jpa-7.1.1.Final.jar:7.1.1.Final]

    at org.jboss.as.web.security.SecurityContextAssociationValve.invoke(SecurityContextAssociationValve.java:153) [jboss-as-web-7.1.1.Final.jar:7.1.1.Final]

    at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:155) [jbossweb-7.0.13.Final.jar:]

    at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102) [jbossweb-7.0.13.Final.jar:]

    at org.apache.catalina.authenticator.SingleSignOn.invoke(SingleSignOn.java:416) [jbossweb-7.0.13.Final.jar:]

    at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109) [jbossweb-7.0.13.Final.jar:]

    at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:368) [jbossweb-7.0.13.Final.jar:]

    at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:877) [jbossweb-7.0.13.Final.jar:]

    at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:671) [jbossweb-7.0.13.Final.jar:]

    at org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:930) [jbossweb-7.0.13.Final.jar:]

    at java.lang.Thread.run(Thread.java:722) [rt.jar:1.7.0_11]

[micste]

could be a different Problem, maybe

https://bugzilla.redhat.com/show_bug.cgi?id=1055122

[lakshjee]

problem is, when i define the inclusive gateway without a business rule task it works.  but when i define it with a business rule task it doesn't work.

rule "set as admin_item" ruleflow-group "ruletask"

no-loop

when $p : Person( table == true ) || $p :Person( chair == true )

then

modify($p) { setAdmin_item(true); }

end

rule "set as it_item" ruleflow-group "ruletask" no-loop when $p : Person( computer== true ) || $p :Person( laptop== true ) then modify($p) { setIt_item(true); } end

My variable is "Person" and the conditions are, return (Person.getIt_item() == true); and return (Person.getAdmin_item() == true);

but i get following error now;

ERROR [org.jbpm.formModeler.components.editor.WysiwygMenuFormatter] (http-jboss-jbpm.lolc.com/192.168.255.150:8080-7) Error: : java.lang.NullPointerException

    at org.jbpm.formModeler.components.editor.WysiwygFormEditor.getCurrentForm(WysiwygFormEditor.java:176) [jbpm-form-modeler-form-editor-6.0.1.Final.jar:]

    at org.jbpm.formModeler.components.editor.WysiwygFormEditor$Proxy$_$$_WeldClientProxy.getCurrentForm(WysiwygFormEditor$Proxy$_$$_WeldClientProxy.java) [jbpm-form-modeler-form-editor-6.0.1.Final.jar:]

   

[lakshjee]

Appreciate very much someone can resolve my problem stated above

[salaboy21]

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